how often should these be replaced?
34053
Generally every 3-4 months. But Book Worm should consult doctor as other factors such as age, illness, weather may be a factor in wear on unit.
34054
Im really bad at replacing this but im sure it is supposed to be done every 6 months
34055
The suppliers who sell these will tell you every three months, but as someone who has been using this product for several years, if you wash it regularly, they will last a year or more with no issues.
1128835
They are a very good replacement product for your device - my best guess is that each pair of pads has about 30 uses before they need to be replaced.
1348362
It depends on how often you run the unit and how much dust/allergens it's filtering out of the air. If it is always running then generally the filter should be replaced every 6-8 months.
688120
Didn't have to use them that long. I do know someone who had the same ones and replaces them every year. THat is why I chose these.
1909563
bulbs burn for well over a year but if you're plants are under performing they should be replaced. I would say replace at least once a year. More if you have light hungry plants.
2160324
They suggest every 60 to 90 days for replacement. You can do both, upper and lower, for me too uncomfortable. I have not seen any difference so far, but I haven't used them every day. good luck.
719491
I haven't had any degradation, but I suspect that they aren't replaceable. I would expect to replace the whole package if one of those components wore out.
341013
I am not sure. I have only recently started replacing ones at the business that I work at.
1246827
I don't know how often you use them but I have had some for up to 6 months and haven't any trouble with them. Hope this has been helpful. Thanks Bert
588250
They last quite awhile actually. I change mine out weekly, even though I never see more than minor wear on them.
420254
They need to be replaced every 4 weeks. Stay on top of it. If there is a root issue at hand that should be addressed through training as well. Also, it can take up to 2 months (2 collars) to see the full effect.
1201845
I've purchased mine a few years ago and still good for me and was regularly used. I have not replaced so far.
1189815
They definitely don't need to be replaced every use. They're a pretty heavy silicone-type material.
1183482
Have you replaced the heads? It is recommended that they be replaced every year. Hope this helps.
228436
I've used mine about 70-100 times and still no need to replace. Definitely not single-use!
540837
Honestly. I'm not 100% sure. Theyre on there pretty good and they work perfect, so I don't see a need to replace.
814717
Mine has been working for several years and just now needs replacement. DOES not need frequent replacement. I've got them in both bathrooms.